Alright, Vegas, today's a bit of a gamble if you're looking to hit it hard outside.

🫁 Lungs & Joints Score/10
    • Pollen Pounding: That infamous desert pollen is back with a vengeance, hitting "High" levels. Your sinuses are not going to thank you for a long outdoor session.
    • Hazy Horizon: Despite a generally "Good" AQI of 45, an air quality advisory is still in effect due to lingering wildfire smoke from Southern California, carrying inhalable particulate matter. While it's not "hazardous" for everyone, those with sensitive lungs will definitely feel it.
    • Mountain Morass: If your go-to is escaping to the Spring Mountains, a heads-up: several popular trails on Mt. Charleston remain closed. Don't risk it, folks.

Look, the temperature is a pleasant 24.6°C (76.3°F) and it's clear out, but don't let that fool you into thinking it's a perfect day. Your lungs are going to be working overtime battling the "High" pollen count, which is no joke this time of year. If you're prone to seasonal allergies, you already know the drill: post-run snot rockets and itchy eyes are probably in your future. Even for the iron-lunged, the dominant pollutant being inhalable particulate matter suggests that what little air pollution we have might irritate your respiratory system more than usual.

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Air Quality Advisory Still Active for Sensitive Groups: While the overall AQI is good, local officials extended an air advisory through today for people with respiratory conditions, children, and the elderly due to lingering smoke. If you fall into these categories, consider taking your workout indoors. AccuWeather even called today's AQI "Poor" for sensitive individuals.

For those of you eyeing the trails, especially up on Mt. Charleston, think again. Echo Trailhead, Mary Jane Falls Trailhead, Trail Canyon Trailhead, Upper Bristlecone Trailhead, and even parts of Cathedral Rock Trail are all still closed. Ignoring those signs isn't just irresponsible, it's asking for a twisted ankle or worse on unstable terrain. There are plenty of open trails listed on the Go Mt. Charleston site, so pick one of those instead of tempting fate.

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Mt. Charleston Trail Closures are REAL. Don't Risk It! Trying to bypass closed signs on trails like Mary Jane Falls or Cathedral Rock is dangerous. Respect the closures; they're there for a reason.

If you're sticking to the urban sprawl, be mindful of ongoing construction. Big projects like the Hard Rock transformation and the A's ballpark are moving along, and city projects around Buffalo Drive and Charleston Boulevard could mean unexpected detours or uneven surfaces on your usual routes. Keep your head up and stay aware of your surroundings.

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Hydration is Key, Even When It's Not Scorching: While 76 degrees isn't peak summer, the dry desert air can still sneakily dehydrate you. Carry water, even on shorter runs.

Here's the lowdown on what's messing with your lungs today:

| Pollen Type | Level | | :---------------- | :---- | | Overall Tree Pollen | High | | Overall Grass Pollen| High | | Overall Weed Pollen | High |

So, can you work out outside? Probably, if you're not sensitive. But don't expect a perfectly crisp, clean run. This isn't the day to push your limits if you've got a sniffle or any underlying breathing issues. Choose your route wisely, especially if you had mountain plans.

Data grounded with Google Search from February 25, 2026.